If you are worried to take OST file conversion process then I would recommend you to use third party OST to PST conversion tool. Using this software you can easily convert OST to PST file with all OST folders as inbox, outbox, drafts, notes, journals, contacts, appointments, tasks and other. This software is compatible with all outlook file versions such as 97, 98, 2000, 2002, 2003, 2007, 2010 and 2013.